did anyone try the ecu tunning before? It is heard that there is a shop at Tokwawan can offer ECU tunning for E90 which can increase both horse power and torque by 10%. Any comments? how about the oil consumption....

Details:1.) only ECU re-flash2.) no extra modification on other parts3.) 10% horse power and torque improvement4.) can re-flash back the original ECU image in case needed